Scala | Uniform Access Principle

In Scala, a programming abstraction is implemented which is called as Uniform Access Principle, which states that the annotations utilized to retrieve a property of a Class is equivalent for both methods and variables. This principle was imposed forward by Bertrand Meyer. The principle simply means that the notation used to access a feature of a class shouldn’t differ depending on whether it’s a method or an attribute .
Some points to note:

Using this Principle attributes and functions with no parameters can be accessed by identical syntax.
The definition of a function with no parameters can be transformed to “var” or vice-versa.
This Principle is more aligned to the object oriented programming.

Example :

// Scala program for Uniform 
// Access Principle 
  
// Creating object 
object Access 
{ 
  
    // Main method 
    def main(args: Array[String]) 
    { 
  
        // Creating array 
        val x : Array[Int] = Array(7, 8, 9, 10, 45) 
  
        // Creating String 
        val y = "GeeksforGeeks"
  
        // Accessing length of an  
        // array 
        println(x.length) 
  
        // Accessing length of a 
        // String 
        println(y.length) 
    } 
} 

Output:

5
13

Now, We know that the length of an array is a variable and length of a string is a method in the Class “String” but we accessed both of them in same way.
Example :

// Scala program for Uniform 
// Access Principle 
  
// Creating object 
object Access 
{ 
  
    // Main method 
    def main(args: Array[String]) 
    { 
  
        // Creating a list 
        val x = List(1, 3, 5, 7, 9, 10) 
  
        // Creating a method 
        def portal = { 
  
        "Geeks" +"for" + "Geeks"
  
        } 
  
        // Accessing size of a 
        // method 
        println(portal.size) 
  
        // Accessing size of a 
        // variable 
        println(x.size) 
    } 
} 

Output:

13
6

Here, also a variable and a method both are accessed in a same manner.

My Personal Notes

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